Barbara had been in the low-ceilinged passage for some time when she came in contact with a solid wall. She gave a glad little exclamation, believing that she had reached the panel that led into the dining room. She had now but to rap and her companions would open the panel. The wind must have blown the panel shut. Barbara put out her hands and began groping for the panel. To her horror, there was no panel there. Her hands found nothing but earth. Some moments had elapsed when Barbara Thurston realized that she was in a predicament.

"I am lost!" she groaned. "Oh, what shall I do?"

The girl decided to call for assistance. There seemed to be no other way. She raised her voice and shouted, but, to her amazement, the shout was merely a feeble call that could not have been heard many feet away. The low walls deadened the sound of her voice.

A little investigation convinced her that she had strayed into a short blind passage. Having made this discovery, she began creeping back, hugging the right-hand wall of the passage, believing that the main passage must begin on the right-hand side. In this she was correct.

Barbara had proceeded but a short distance before she found the junction of the two passages. She had not observed this shorter passage when following Tom, and no doubt he had known that she would be almost sure to lose her way, just as she had done. But there was no Tom present on whom to vent her displeasure. Neither was Barbara yet out of the tunnel. For all she knew she might be in a wholly new passage. Before going ahead she sat down to think over her situation carefully.

"No, I can't be mistaken. I must be right. But I ought to see the light from the dining room from this point. However, I will go on and trust to luck."

Barbara started on at once, though she took no chance of losing herself. Every foot of the walls on either side was carefully groped over by her hands as she made her way. The earth felt cold and damp. To touch it made her shiver. But Barbara was plucky. She continued bravely on.

"Oh, there's the light," she cried. "I'll call to let them know I am coming. No, I won't. I'll give them a scare. Lucky for me that I kept my head. I might have been lost in that short passage and never found again. How terrible. But an 'Automobile Girl' never gives up. I hear voices. The girls must be wondering what has become of me. I think I hear Tom in the dining room. I wonder what I had better do to punish him for the trick he played on me? I shall have to think it over. I——

"Gracious! What would I do if the girls should happen to have company in the old dining room? I shouldn't dare to come out, for I know I must look a fright." Bab soon reached the panel, which was still as she had left it upon entering the passage. Then as she craned her neck forward and peered into the dining room she uttered a smothered exclamation.

Mr. and Mrs. Presby were sitting facing the fire, talking. The girl in the passage drew back as she saw Mr. Presby's eye fixed upon the panel. He appeared to be looking straight at her. A moment more and she was convinced that he was not.